| 长白山北坡林线分布趋势的研究(英文) |
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| 引用本文： | 张扬建,代力民,潘洁.长白山北坡林线分布趋势的研究(英文)[J].林业研究,2001,12(2):97-100. |
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| 作者姓名： | 张扬建 代力民 潘洁 |
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| 作者单位： | 中科院沈阳生态研究所!沈阳110015，中科院沈阳生态研究所!沈阳110015，江西农业大学!南昌 330045 |
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| 基金项目： | 973 Project (G1999043407-1) and Project for pioneering new knowledge from Chinese Academy of Sciences (KZCX2-406-1-3). |
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| 摘 要： | 为了揭示高山树线随着气候变化而变化的现象，对长白山的高山树线变化趋势进行了研究。根据长白山北坡地区的气象数据，重点调查了（对树线有最大限制作用）一月平均气温和年积温。并在岳桦林与高山苔原之间的交叉带内测出岳桦的地径及样方内岳桦株数。根据地径与年龄有线性关系，地径可以用来代替年龄。结果表明岳桦林年龄随着海拔的上升而降低。近些年长白山北坡的气温在渐渐上升，因此导致了高山树线的上升。
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| 关 键 词： | 树线 温度 海拔 气象数据 |
| 收稿时间： | 14 March 2001 |
The trend of tree line on the northern slope of Changbai Mountain |
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| Zhang Yang-jian,Dai Li-min,Pan Jie.The trend of tree line on the northern slope of Changbai Mountain[J].Journal of Forestry Research,2001,12(2):97-100. |
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| Authors: | Zhang Yang-jian Dai Li-min Pan Jie |
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| Institution: | (1) Institute of Applied Ecology, Chinese Academy of Sciences, 110015 Shenyang, P.R. China;(2) Jiangxi Agricultural University, 330045 Nanchang, P.R. China |
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| Abstract: | In order to decipher phenomenon of tree line changing with climate variety, the trend of tree line on the northern slope of Changbai Mountain was studied. Based on the meteorological data of Changbai Mountain, the January temperature (the limiting effect for tree line) and annual mean temperature were mainly investigated. In the ecotone between Betula ermanii and alpine tundra, the number and diameter at ground level of Betula ermanii in the plots were measured. According to the correlation between diameter at ground level (DGL) and age, the diameter at ground level can represent age directly. The results showed that the distribution age of Betula ermanii was in the trend of decreasing with elevation rising. In resent years, the annual mean temperature near Changbai Mountain is rising, which has led to the tree line ascending. |
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| Keywords: | Tree line Temperature Elevation Meteorological data |
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